How to Find Technical Debt in Your Business

What technical debt actually means outside a software team

Technical debt started as a software engineering term: the shortcuts a development team takes to ship faster, paid back later with interest in the form of slower changes and more bugs. Most growing businesses do not run a software team, but they carry the same debt in a different form.

In an IT context, technical debt is every decision that solved a problem quickly at the time and was never revisited. The server that was meant to be replaced two refresh cycles ago. The firewall rule added for a project that ended eighteen months ago and was never removed. The spreadsheet that became the unofficial system of record because the proper tool was too much hassle to roll out fully. None of these were wrong decisions in the moment. They become debt because nobody went back and closed the loop.

The interest on this debt is paid in slower IT support, higher renewal costs, more security exposure, and decisions that take longer than they should because nobody is entirely sure what is actually running underneath the business.

Why it stays invisible until it is expensive

Technical debt is hard to see because none of it shows up as a single dramatic failure. It shows up as friction: onboarding a new starter takes three days instead of one, a routine software update breaks something nobody remembers configuring, a vendor renewal arrives for a tool half the business stopped using a year ago.

Because each individual item is small, nobody owns the job of finding it. IT support fixes what is in front of them. Finance approves renewals because cancelling requires someone to confirm the tool is genuinely unused, and confirming that takes longer than approving the invoice. Leadership only sees the problem when something breaks badly enough to interrupt the business, by which point the fix costs considerably more than it would have a year earlier.

Finding technical debt on purpose, before it finds you, is the only way to get ahead of it.

Where technical debt actually hides

In practice, technical debt in a growing ASEAN business tends to collect in the same handful of places. Working through these systematically, rather than waiting for something to break, is the fastest way to find out what you are actually carrying.

End-of-life and unsupported systems

Servers, network switches, and operating systems that vendors have stopped patching are the most common and most dangerous form of technical debt. An unsupported system is not just old, it is a growing security liability with every month that passes, because newly discovered vulnerabilities in it will never be fixed. Check your server operating systems, your firewall firmware, and any line-of-business application still running on a version the vendor has formally end-of-lifed.

Deferred patching and unmanaged devices

A device that is not centrally managed is a device that is not reliably patched, and a business cannot know its real security posture without knowing what proportion of laptops, servers, and mobile devices are enrolled in patch management and actually up to date. This is one of the simplest things to check and one of the most commonly avoided, because the honest answer is often uncomfortable.

Licence and subscription sprawl

Overlapping software is technical debt with a monthly invoice attached. Finance tracks work in Planner, Operations runs the same workflow in Asana, and the project team has quietly adopted Trello, all solving the same coordination problem in three incompatible tools. Pull a list of every active software subscription against a list of who actually uses each one. The gap between the two lists is the debt.

Undocumented network and identity configuration

If the person who set up your firewall rules, your Wi-Fi segmentation, or your Microsoft 365 admin permissions left tomorrow, could someone else pick it up from documentation alone? For most growing businesses, the honest answer is no. Undocumented configuration is debt because every future change to that system now requires reverse-engineering what is already there before anyone can safely touch it.

Single points of failure and key-person dependency

This is technical debt in human form. One person who knows how the accounting system integrates with the CRM, one laptop holding the only copy of a critical spreadsheet, one vendor relationship that only one person in the business actually manages. Map what would stop functioning, or become very difficult, if a specific person were unreachable for a month.

Shadow IT and unsanctioned tools

Any tool an employee adopted without IT's knowledge, because the sanctioned option was too slow or too limited, is a gap in your own picture of your technology estate. It is rarely malicious. It is usually someone trying to get their job done. But data sitting in a tool IT does not know exists is data you cannot secure, back up, or account for when a client or regulator asks where their information lives.

Deferred security controls

Multi-factor authentication rolled out for some accounts but not all. A backup that has never actually been tested with a real restore. An offboarding process that removes email access but not the twelve other systems a former employee could still reach. Security debt is dangerous because it is invisible right up until the moment it is not, and by then the cost is no longer measured in IT hours.

Duplicate and disconnected systems

When systems that should talk to each other do not, someone is manually re-entering the same data in two places, and the two copies quietly drift apart over time. This is one of the more expensive forms of debt because it consumes real staff hours every single week, permanently, until someone fixes the underlying integration rather than the symptom.

A simple way to run the audit yourself

You do not need a formal framework to get started, you need forty-five minutes and an honest list. For each of the eight areas above, write down what you actually find, then score it against three questions.

How old is it, and is a fix already overdue by any vendor's own definition? What does it actually cost to leave it as it is for another twelve months, in security exposure, wasted licence spend, or staff time? What would it cost to fix now, and does that number look small or large next to the first answer?

Anything where the cost of leaving it clearly exceeds the cost of fixing it belongs at the top of your list, regardless of how technically simple or complex the fix is. This alone, done honestly, usually produces a more useful and more defensible priority order than a vendor-led audit that happens to recommend whatever that vendor sells.

What it actually costs to ignore

Reliable, business-specific numbers on technical debt are hard to come by, because most published research measures software codebases rather than IT infrastructure. What exists is still worth knowing. The Consortium for Information and Software Quality's widely cited 2022 estimate put the accumulated cost of technical debt across US organisations at USD 1.52 trillion, part of a broader USD 2.41 trillion cost of poor software quality. Separate McKinsey research from 2020 found technical debt can represent 20 to 40 percent of the value of a company's entire technology estate before it is even addressed. Neither figure is specific to Singapore or ASEAN, and both are older than they appear when recirculated as if new, but the direction is consistent with what shows up in practice: debt compounds, and it is cheaper to find early than to discover during an incident.

The clearest recent figure that does apply directly is security-related. IBM's 2026 Cost of a Data Breach Report put the global average cost of a breach at USD 4.99 million, and unpatched or end-of-life systems remain one of the most common entry points. That is the sharp end of technical debt: it is rarely the old server itself that costs money, it is what gets through the door because of it.

When it is worth a second pair of eyes

Most businesses can run the basic version of this audit internally, and should, at least once a year. Bringing in outside help earns its cost in two specific situations: when nobody inside the business can honestly separate "this is fine" from "this is fine because nobody has looked properly," and when the business is heading into a moment, a funding round, an acquisition, a major system replacement, where an external, dated, defensible view of the technology estate matters more than an internal one.

A fractional technology leader who has run this exercise across dozens of businesses will find things faster than a first internal attempt, mostly because they know where debt tends to hide and are not invested in any particular answer.

Frequently Asked Questions

Is technical debt the same thing as having old equipment?

Not quite. Old equipment is one symptom of it, but technical debt also includes things that are not old at all: a brand new tool nobody documented properly, a licence added last quarter that duplicates one you already had, or a security control that was switched on for some accounts and forgotten for others. Age is one signal among several, not the definition.

How much does technical debt actually cost a business?

There is no single reliable figure for IT infrastructure specifically, most published research measures software development rather than infrastructure. What is consistent across the research that does exist is that the cost compounds the longer it is left, and that the cheapest time to deal with any single item is always now rather than during an incident or a deal. Running your own audit against actual licence spend, support hours, and security exposure will give a far more accurate number for your business than any industry-wide statistic.

Who should be responsible for finding technical debt, IT or leadership?

Both, with leadership owning the decision to prioritise it. IT or your MSP is usually the only party with visibility into what exists, but they rarely have the authority or the incentive to force a conversation about fixing it, particularly if the MSP relationship itself contributed to some of the sprawl. Leadership needs to ask for the audit, review it honestly, and commit budget and time to the items that matter, rather than leaving it as a permanent line on someone else's to-do list.

Can technical debt be fixed all at once?

Rarely, and trying to usually creates more risk than it solves. A better approach is the same one used for the wider technology roadmap: sequence by the ratio of cost of ignoring an item to the cost of fixing it, address the highest-risk items first, typically security-related ones, and treat the rest as a rolling programme rather than a one-off project.

How often should a business audit for technical debt?

Once a year as a baseline, and additionally before any major event: a funding round, an acquisition, a significant system migration, or a material change in headcount. Technology estates drift continuously, so an audit that is more than eighteen months old is unlikely to reflect what is actually running in the business today.

Does technical debt affect a company's valuation?

It can. In an M&A context specifically, undocumented technical debt is one of the risks that standard financial due diligence does not surface, because it does not appear in the accounts. It tends to show up later, in integration costs or unexpected remediation spend, which is why it is increasingly treated as its own line item in technology due diligence rather than folded into general IT commentary.

Related Guides

• Building a Technology Roadmap Without a Full-Time Tech Leader: Once you know what technical debt you are carrying, this is how to sequence fixing it against everything else competing for budget.
• The IT Due Diligence Checklist: What Buyers Actually Look At: What happens when someone else runs this audit on your business, during a sale.
• Technology Debt as a Deal Risk: How to Quantify It Before You Sign: What happens when this same audit gets run by a buyer's advisor, and how the findings turn into a number in the agreement.